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Avoid copying of the PUT body if possible

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In the case where Nginx wrote the PUT body to a temporary file, try to
rename() that file instead of copying the data.
This commit is contained in:
Holger Weiss 2018-07-18 20:52:15 +02:00
parent ee9c39ca6f
commit b9141ef899
1 changed files with 37 additions and 27 deletions
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64
upload.pm
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@ -128,42 +128,52 @@ sub handle_put_body {
return HTTP_FORBIDDEN; # Assume EACCES.
}
if (sysopen(my $fh, $file_path, O_WRONLY|O_CREAT|O_EXCL, $file_mode)) {
if (not binmode($fh)) {
$r->log_error($!, "Cannot set binary mode for $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
}
my $request_body = $r->request_body;
my $request_body_file = $r->request_body_file;
my $request_body = $r->request_body;
my $request_body_file = $r->request_body_file;
if ($request_body) {
if ($request_body) {
if (sysopen(my $fh, $file_path, O_WRONLY|O_CREAT|O_EXCL, $file_mode)) {
if (not binmode($fh)) {
$r->log_error($!, "Cannot set binary mode for $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
}
if (not syswrite($fh, $request_body)) {
$r->log_error($!, "Cannot write $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
}
} elsif ($request_body_file) {
if (not move($request_body_file, $fh)) {
$r->log_error($!, "Cannot move data to $file_path");
if (not close($fh)) {
$r->log_error($!, "Cannot close $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
}
} else { # Huh?
$r->log_error(0, "Got no data to write to $file_path");
return HTTP_BAD_REQUEST;
}
if (not close($fh)) {
$r->log_error($!, "Cannot close $file_path");
} elsif ($!{EEXIST}) {
$r->log_error($!, "Won't overwrite $file_path");
return HTTP_CONFLICT;
} elsif ($!{EACCES}) {
$r->log_error($!, "Cannot create $file_path");
return HTTP_FORBIDDEN;
} else {
$r->log_error($!, "Cannot open $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
}
} elsif ($!{EEXIST}) {
$r->log_error($!, "Won't overwrite $file_path");
return HTTP_CONFLICT;
} elsif ($!{EACCES}) {
$r->log_error($!, "Cannot create $file_path");
return HTTP_FORBIDDEN;
} else {
$r->log_error($!, "Cannot open $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
} elsif ($request_body_file) {
# We could hand over the file handle created by the above sysopen() as
# the second argument to move(), but we want to let move() use rename()
# if possible.
if (-e $file_path) {
$r->log_error(0, "Won't overwrite $file_path");
return HTTP_CONFLICT;
}
if (not move($request_body_file, $file_path)) {
$r->log_error($!, "Cannot move data to $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
}
if (chmod($file_mode, $file_path) < 1) {
$r->log_error($!, "Cannot change permissions of $file_path");
return HTTP_INTERNAL_SERVER_ERROR;
}
} else { # Huh?
$r->log_error(0, "Got no data to write to $file_path");
return HTTP_BAD_REQUEST;
}
return HTTP_CREATED;
}